Titlebook: Computational Acoustics; Manfred Kaltenbacher Book 2018 CISM International Centre for Mechanical Sciences 2018 aeroacoustics.computational

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Marko M. Popovic,Svetozar S. Popovicasi-singular integrals and finishes with an integration strategy for singular integrals. Subsequent sections discuss the choice of boundary elements and the methods to deal with the well-known non-uniqueness problem in BEM. While it has become obvious for the former problem that discontinuous Lagran

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Microscopic Kinetic Theory of Fluidsmputational efficiency. This discretization choice allows arbitrary order in space while also supporting unstructured meshes. After discussing the details of the framework, examples of direct noise computation are presented, with a special focus on the numerical simulation of acoustic feedback in a

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Direct Aeroacoustic Simulations Based on High Order Discontinuous Galerkin Schemes,mputational efficiency. This discretization choice allows arbitrary order in space while also supporting unstructured meshes. After discussing the details of the framework, examples of direct noise computation are presented, with a special focus on the numerical simulation of acoustic feedback in a

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Fundamental Equations of Acoustics,constitutive equation defining the thermodynamic state. The use of a perturbation ansatz, which decomposes the physical quantities density, pressure and velocity into mean, incompressible fluctuating and compressible fluctuating ones, allows to derive linearized acoustic conservation equations and i

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Non-conforming Finite Elements for Flexible Discretization with Applications to Aeroacoustics,lexibility to choose for each sub-domain an optimal grid. The two proposed methods - Mortar and Nitsche-type mortaring - fulfill the physical conditions along the non-conforming interfaces. We exploit this capability and apply it to real engineering applications in aeroacoustics. The results clearly

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Direct and Iterative Solvers,ite element discretization of partial differential equations or systems of partial differential equations. Beside classical iterative solvers, we also consider advanced preconditioning and solving techniques like additive and multiplicative Schwarz methods, generalizing Jacobi’s and Gauss–Seidel’s i